diff --git a/Config.cs b/Config.cs
index ad41e09..265152c 100644
--- a/Config.cs
+++ b/Config.cs
@@ -2,6 +2,7 @@
 {
     internal class Config
     {
+        public int mode = 0;
         public string sn = "";
         public string disk0 = "";
         public string disk1 = "";
diff --git a/MainWindow.xaml b/MainWindow.xaml
index 74d4d66..6c328be 100644
--- a/MainWindow.xaml
+++ b/MainWindow.xaml
@@ -6,25 +6,32 @@
         xmlns:local="clr-namespace:Topuino_Client_Windows"
         mc:Ignorable="d"
         Closing="Window_Closing"
-        Title="Topuino 客户端" Height="150" Width="400">
+        Title="Topuino 客户端" Height="180" Width="400">
     <Grid>
         <Grid.RowDefinitions>
             <RowDefinition Height="*" />
             <RowDefinition Height="*" />
             <RowDefinition Height="*" />
+            <RowDefinition Height="*" />
         </Grid.RowDefinitions>
-        <StackPanel Grid.Row="0" Orientation="Horizontal" HorizontalAlignment="Left" Margin="5">
+        <StackPanel Grid.Row="0" Orientation="Horizontal" Margin="5">
+            <Label Content="运行模式：" VerticalAlignment="Center" />
+            <RadioButton x:Name="RadioButton_UsbMode" VerticalAlignment="Center" Margin="5,0" IsChecked="True">USB 模式</RadioButton>
+            <RadioButton x:Name="RadioButton_OnlineMode" VerticalAlignment="Center" Margin="5,0">在线模式</RadioButton>
+            <RadioButton x:Name="RadioButton_LocalMode" VerticalAlignment="Center" Margin="5,0">本地模式</RadioButton>
+        </StackPanel>
+        <StackPanel Grid.Row="1" Orientation="Horizontal" HorizontalAlignment="Left" Margin="5">
             <TextBlock Text="设备 SN：" VerticalAlignment="Center"/>
             <TextBox x:Name="TextBox_DeviceSn" Width="80" VerticalAlignment="Center" />
         </StackPanel>
-        <StackPanel Grid.Row="1" Orientation="Horizontal" HorizontalAlignment="Left" Margin="5">
+        <StackPanel Grid.Row="2" Orientation="Horizontal" HorizontalAlignment="Left" Margin="5">
             <TextBlock Text="0 号磁盘：" VerticalAlignment="Center"/>
             <ComboBox x:Name="ComboBox_Disk0" Height="20" Width="60" VerticalAlignment="Center"/>
             <Separator Width="10" Background="Transparent" />
             <TextBlock Text="1 号磁盘：" VerticalAlignment="Center"/>
             <ComboBox x:Name="ComboBox_Disk1" Height="20" Width="60" VerticalAlignment="Center"/>
         </StackPanel>
-        <StackPanel Grid.Row="2" Orientation="Horizontal" HorizontalAlignment="Right" Margin="5">
+        <StackPanel Grid.Row="3" Orientation="Horizontal" HorizontalAlignment="Right" Margin="5">
             <Button Content="保存" Click="Button_Save_Click" Height="20" Width="40" />
             <Separator Width="10" Background="Transparent" />
             <Button Content="隐藏" Click="Button_Hide_Click" Height="20" Width="40" />
diff --git a/MainWindow.xaml.cs b/MainWindow.xaml.cs
index 83cd4f7..9c92d4a 100644
--- a/MainWindow.xaml.cs
+++ b/MainWindow.xaml.cs
@@ -56,38 +56,72 @@ namespace Topuino_Client_Windows
 
         private NotifyIcon trayIon = new NotifyIcon();
 
+        private int mode = 0;
         private string sn = "";
         private List<DriveInfo> allDrives;
         private DriveInfo? drive0 = null;
         private DriveInfo? drive1 = null;
 
-        private Config? initConfig = null;
-
         private Thread? refreshThread = null;
 
         private ManualResetEvent requestStop = new ManualResetEvent(false);
         private ManualResetEvent stopDone = new ManualResetEvent(false);
 
+        private PublicComm onlineClient = new PublicComm();
+        private UsbComm usbClient = new UsbComm();
+
         private void LoadConfig()
         {
             try
             {
-                initConfig = JsonConvert.DeserializeObject<Config>(File.ReadAllText("Config.json"));
+                Config? initConfig = JsonConvert.DeserializeObject<Config>(File.ReadAllText("Config.json"));
                 if (initConfig == null)
                 {
                     throw new Exception();
                 }
 
+                switch (initConfig.mode)
+                {
+                    case 0:
+                        RadioButton_UsbMode.IsChecked = true;
+                        mode = 0;
+                        break;
+                    case 1:
+                        RadioButton_OnlineMode.IsChecked = true;
+                        mode = 1;
+                        break;
+                    case 2:
+                        RadioButton_LocalMode.IsChecked = true;
+                        mode = 2;
+                        break;
+                    default:
+                        RadioButton_UsbMode.IsChecked = true;
+                        mode = 0;
+                        break;
+                }
+
                 // check if drivers missing
+                bool disk0Found = false;
+                bool disk1Fount = false;
                 foreach (DriveInfo drive in allDrives)
                 {
-                    if (drive.Name != initConfig.disk0 && drive.Name != initConfig.disk1)
+                    if (drive.Name == initConfig.disk0)
                     {
-                        initConfig.disk0 = drive.Name;
-                        initConfig.disk1 = drive.Name;
-                        break;
+                        disk0Found = true;
+                    } 
+                    if (drive.Name == initConfig.disk1)
+                    {
+                        disk1Fount = true;
                     }
                 }
+                if (!disk0Found)
+                {
+                    initConfig.disk0 = allDrives[0].Name;
+                }
+                if (!disk1Fount)
+                {
+                    initConfig.disk1 = allDrives[0].Name;
+                }
 
                 for (int i = 0; i < allDrives.Count; i++)
                 {
@@ -149,25 +183,62 @@ namespace Topuino_Client_Windows
                 }
 
 #pragma warning disable CS8602 // Dereference of a possibly null reference.
-                Dictionary<string, string> statusInfo = new Dictionary<string, string>();
-                statusInfo.Add("SN", sn);
-                statusInfo.Add("CPU_PERCENT", ((int)cpuCounter.NextValue()).ToString());
-                statusInfo.Add("MEM_PERCENT", ((int)ramPercentUsed).ToString());
-                statusInfo.Add("DISK_PERCENT", ((int)((double)(drive0.TotalSize - drive0.AvailableFreeSpace) / drive0.TotalSize * 100)).ToString());
-                statusInfo.Add("DISK1_PERCENT", ((int)((double)(drive1.TotalSize - drive1.AvailableFreeSpace) / drive1.TotalSize * 100)).ToString());
-                statusInfo.Add("DISK_READ_RATE", ((int)diskReadCounter.NextValue()).ToString());
-                statusInfo.Add("DISK_WRITE_RATE", ((int)diskWriteCounter.NextValue()).ToString());
-                statusInfo.Add("NET_SENT_RATE", ((int)(netBytesSentAfter - netBytesSentBefore)).ToString());
-                statusInfo.Add("NET_RECV_RATE", ((int)(netBytesSentAfter - netBytesSentBefore)).ToString());
+                MonitorData data = new MonitorData
+                {
+                    sn = sn,
+                    cpuPercent = (byte)cpuCounter.NextValue(),
+                    memPercent = (byte)ramPercentUsed,
+                    disk0Percent = (byte)((double)(drive0.TotalSize - drive0.AvailableFreeSpace) / drive0.TotalSize * 100),
+                    disk1Percent = (byte)((double)(drive1.TotalSize - drive1.AvailableFreeSpace) / drive1.TotalSize * 100),
+                    diskReadRate = (uint)diskReadCounter.NextValue(),
+                    diskWriteRate = (uint)diskWriteCounter.NextValue(),
+                    netSentRate = (uint)(netBytesSentAfter - netBytesSentBefore),
+                    netRecvRate = (uint)(netBytesReceiveAfter - netBytesReceiveBefore),
+                };
 #pragma warning restore CS8602 // Dereference of a possibly null reference.
-
-                PublicComm connection = new PublicComm();
-                connection.Post(statusInfo);
             }
 
             stopDone.Set();
         }
 
+        private struct MonitorData
+        {
+            public string sn;
+            public byte cpuPercent;
+            public byte memPercent;
+            public byte disk0Percent;
+            public byte disk1Percent;
+            public uint diskReadRate;
+            public uint diskWriteRate;
+            public uint netSentRate;
+            public uint netRecvRate;
+        }
+
+        private void UsbRun(MonitorData data)
+        {
+
+        }
+
+        private void OnlineRun(MonitorData data)
+        {
+            Dictionary<string, string> statusInfo = new Dictionary<string, string>();
+            statusInfo.Add("SN", data.sn);
+            statusInfo.Add("CPU_PERCENT", data.cpuPercent.ToString());
+            statusInfo.Add("MEM_PERCENT", data.memPercent.ToString());
+            statusInfo.Add("DISK_PERCENT", data.disk0Percent.ToString());
+            statusInfo.Add("DISK1_PERCENT", data.disk1Percent.ToString());
+            statusInfo.Add("DISK_READ_RATE", data.diskReadRate.ToString());
+            statusInfo.Add("DISK_WRITE_RATE", data.diskWriteRate.ToString());
+            statusInfo.Add("NET_SENT_RATE", data.netSentRate.ToString());
+            statusInfo.Add("NET_RECV_RATE", data.netRecvRate.ToString());
+        }
+
+        private void OfflineRun(MonitorData data)
+        {
+
+        }
+
+
         public void ShowErrorBox(string msg)
         {
             System.Windows.MessageBox.Show(
@@ -202,6 +273,7 @@ namespace Topuino_Client_Windows
             if (!drive0.IsReady || !drive1.IsReady)
             {
                 ShowErrorBox("磁盘未就绪");
+                Mouse.OverrideCursor = null;
                 return;
             }
 #pragma warning restore CS8602 // Dereference of a possibly null reference.
@@ -215,6 +287,29 @@ namespace Topuino_Client_Windows
         private async void SaveConfig()
         {
             Config newConfig = new Config();
+            newConfig.mode = 0;
+
+            if (RadioButton_UsbMode.IsChecked != null)
+            {
+                if ((bool)RadioButton_UsbMode.IsChecked)
+                {
+                    newConfig.mode = 0;
+                }
+            }
+            if (RadioButton_OnlineMode.IsChecked != null)
+            {
+                if ((bool)RadioButton_OnlineMode.IsChecked)
+                {
+                    newConfig.mode = 1;
+                }
+            }
+            if (RadioButton_LocalMode.IsChecked != null)
+            {
+                if ((bool)RadioButton_LocalMode.IsChecked)
+                {
+                    newConfig.mode = 2;
+                }
+            }
             newConfig.sn = sn;
 #pragma warning disable CS8602 // Dereference of a possibly null reference.
             newConfig.disk0 = drive0.Name;
diff --git a/ParamsSample.json b/ParamsSample.json
index 04ef6ed..c1a827c 100644
--- a/ParamsSample.json
+++ b/ParamsSample.json
@@ -1,4 +1,5 @@
 {
+  "mode": 0,
   "sn": "V0000T0000",
   "disk0": "C:\\",
   "disk1": "C:\\"
diff --git a/UsbComm.cs b/UsbComm.cs
new file mode 100644
index 0000000..e60d63c
--- /dev/null
+++ b/UsbComm.cs
@@ -0,0 +1,12 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Topuino_Client_Windows
+{
+    internal class UsbComm
+    {
+    }
+}